81135675

素因数分解:

$3^4\times 5^2\times {\mathrm{103}}^1\times {\mathrm{389}}^1$

素因数の和:514

約数の個数: 60

約数和(自身を含む): 152140560

約数和(自身を除く): 71004885

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 103, 135, 225, 309, 389, 405, 515, 675, 927, 1167, 1545, 1945, 2025, 2575, 2781, 3501, 4635, 5835, 7725, 8343, 9725, 10503, 13905, 17505, 23175, 29175, 31509, 40067, 41715, 52515, 69525, 87525, 120201, 157545, 200335, 208575, 262575, 360603, 601005, 787725, 1001675, 1081809, 1803015, 3005025, 3245427, 5409045, 9015075, 16227135, 27045225, 81135675]

約数ペア:

[(1, 81135675), (3, 27045225), (5, 16227135), (9, 9015075), (15, 5409045), (25, 3245427), (27, 3005025), (45, 1803015), (75, 1081809), (81, 1001675), (103, 787725), (135, 601005), (225, 360603), (309, 262575), (389, 208575), (405, 200335), (515, 157545), (675, 120201), (927, 87525), (1167, 69525), (1545, 52515), (1945, 41715), (2025, 40067), (2575, 31509), (2781, 29175), (3501, 23175), (4635, 17505), (5835, 13905), (7725, 10503), (8343, 9725)]